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Message-ID: <CAA8EJpqyhmmf_S4jDRgyV0rjTnN3BiaKZQ_yg3Mnqd8xNzw0nw@mail.gmail.com>
Date: Sun, 15 Dec 2024 12:04:08 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
Karol Herbst <kherbst@...hat.com>, Lyude Paul <lyude@...hat.com>,
Danilo Krummrich <dakr@...nel.org>, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org, nouveau@...ts.freedesktop.org
Subject: Re: [PATCH 2/2] drm/nouveau: vendor in drm_encoder_slave API
On Sat, 14 Dec 2024 at 22:36, Laurent Pinchart
<laurent.pinchart@...asonboard.com> wrote:
>
> Hi Dmitry,
>
> Thank you for the patch.
>
> On Sat, Dec 14, 2024 at 05:35:45PM +0200, Dmitry Baryshkov wrote:
> > Nouveau driver is the only user of the drm_encoder_slave API. Rework
> > necessary bits of drm_encoder_slave into the nouveau_i2c_encoder API and
> > drop drm_encoder_slave.c from the DRM KMS helper.
> >
> > Suggested-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> > ---
> > drivers/gpu/drm/Makefile | 1 -
> > drivers/gpu/drm/nouveau/dispnv04/Kbuild | 1 +
> > drivers/gpu/drm/nouveau/dispnv04/dfp.c | 10 +-
> > drivers/gpu/drm/nouveau/dispnv04/i2c/ch7006_drv.c | 30 +++---
> > drivers/gpu/drm/nouveau/dispnv04/i2c/ch7006_mode.c | 8 +-
> > drivers/gpu/drm/nouveau/dispnv04/i2c/ch7006_priv.h | 4 +-
> > drivers/gpu/drm/nouveau/dispnv04/i2c/sil164_drv.c | 30 +++---
> > .../dispnv04/nouveau_i2c_encoder.c} | 85 +++++-----------
> > drivers/gpu/drm/nouveau/dispnv04/tvnv04.c | 18 ++--
> > drivers/gpu/drm/nouveau/dispnv04/tvnv17.c | 4 +-
> > .../gpu/drm/nouveau/include/i2c/encoder_i2c.h | 108 ++++++++-------------
> > drivers/gpu/drm/nouveau/nouveau_connector.c | 6 +-
> > drivers/gpu/drm/nouveau/nouveau_encoder.h | 13 +--
> > 13 files changed, 127 insertions(+), 191 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
> > index 19fb370fbc56772077973c864df71e4b8e0bf99b..85af94bb907d6cdbad7078e2667426e479b1069f 100644
> > --- a/drivers/gpu/drm/Makefile
> > +++ b/drivers/gpu/drm/Makefile
> > @@ -135,7 +135,6 @@ drm_kms_helper-y := \
> > drm_atomic_state_helper.o \
> > drm_crtc_helper.o \
> > drm_damage_helper.o \
> > - drm_encoder_slave.o \
> > drm_flip_work.o \
> > drm_format_helper.o \
> > drm_gem_atomic_helper.o \
> > diff --git a/drivers/gpu/drm/nouveau/dispnv04/Kbuild b/drivers/gpu/drm/nouveau/dispnv04/Kbuild
> > index 949802882ebd53c15e124c218a092af9693d36bc..4c7bc6bb81b325ac22286372b0a3e4f1390e78be 100644
> > --- a/drivers/gpu/drm/nouveau/dispnv04/Kbuild
> > +++ b/drivers/gpu/drm/nouveau/dispnv04/Kbuild
> > @@ -6,6 +6,7 @@ nouveau-y += dispnv04/dac.o
> > nouveau-y += dispnv04/dfp.o
> > nouveau-y += dispnv04/disp.o
> > nouveau-y += dispnv04/hw.o
> > +nouveau-y += dispnv04/nouveau_i2c_encoder.o
> > nouveau-y += dispnv04/overlay.o
> > nouveau-y += dispnv04/tvmodesnv17.o
> > nouveau-y += dispnv04/tvnv04.o
> > diff --git a/drivers/gpu/drm/nouveau/dispnv04/dfp.c b/drivers/gpu/drm/nouveau/dispnv04/dfp.c
> > index 28a42ab5cb900ebe8a526e154f9e90598333356c..e211602298a5fb9f513203720b3ee5d37cd21122 100644
> > --- a/drivers/gpu/drm/nouveau/dispnv04/dfp.c
> > +++ b/drivers/gpu/drm/nouveau/dispnv04/dfp.c
> > @@ -171,7 +171,7 @@ static struct drm_encoder *get_tmds_slave(struct drm_encoder *encoder)
> > list_for_each_entry(slave, &dev->mode_config.encoder_list, head) {
> > struct dcb_output *slave_dcb = nouveau_encoder(slave)->dcb;
> >
> > - if (slave_dcb->type == DCB_OUTPUT_TMDS && get_slave_funcs(slave) &&
> > + if (slave_dcb->type == DCB_OUTPUT_TMDS && get_encoder_i2c_funcs(slave) &&
> > slave_dcb->tmdsconf.slave_addr == dcb->tmdsconf.slave_addr)
> > return slave;
> > }
> > @@ -473,7 +473,7 @@ static void nv04_dfp_commit(struct drm_encoder *encoder)
> > /* Init external transmitters */
> > slave_encoder = get_tmds_slave(encoder);
> > if (slave_encoder)
> > - get_slave_funcs(slave_encoder)->mode_set(
> > + get_encoder_i2c_funcs(slave_encoder)->mode_set(
> > slave_encoder, &nv_encoder->mode, &nv_encoder->mode);
> >
> > helper->dpms(encoder, DRM_MODE_DPMS_ON);
> > @@ -614,8 +614,8 @@ static void nv04_dfp_destroy(struct drm_encoder *encoder)
> > {
> > struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
> >
> > - if (get_slave_funcs(encoder))
> > - get_slave_funcs(encoder)->destroy(encoder);
> > + if (get_encoder_i2c_funcs(encoder))
> > + get_encoder_i2c_funcs(encoder)->destroy(encoder);
> >
> > drm_encoder_cleanup(encoder);
> > kfree(nv_encoder);
> > @@ -649,7 +649,7 @@ static void nv04_tmds_slave_init(struct drm_encoder *encoder)
> > if (type < 0)
> > return;
> >
> > - drm_i2c_encoder_init(dev, to_encoder_slave(encoder),
> > + nouveau_i2c_encoder_init(dev, to_encoder_i2c(encoder),
> > &bus->i2c, &info[type].dev);
> > }
> >
> > diff --git a/drivers/gpu/drm/nouveau/dispnv04/i2c/ch7006_drv.c b/drivers/gpu/drm/nouveau/dispnv04/i2c/ch7006_drv.c
> > index 131512a5f3bd996ad1e2eb869ffa09837daba0c7..c9249b58e65459ae61898a246c36da2c3bfe0844 100644
> > --- a/drivers/gpu/drm/nouveau/dispnv04/i2c/ch7006_drv.c
> > +++ b/drivers/gpu/drm/nouveau/dispnv04/i2c/ch7006_drv.c
> > @@ -47,14 +47,14 @@ static void ch7006_encoder_destroy(struct drm_encoder *encoder)
> > drm_property_destroy(encoder->dev, priv->scale_property);
> >
> > kfree(priv);
> > - to_encoder_slave(encoder)->slave_priv = NULL;
> > + to_encoder_i2c(encoder)->encoder_i2c_priv = NULL;
> >
> > - drm_i2c_encoder_destroy(encoder);
> > + nouveau_i2c_encoder_destroy(encoder);
> > }
> >
> > static void ch7006_encoder_dpms(struct drm_encoder *encoder, int mode)
> > {
> > - struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
> > + struct i2c_client *client = nouveau_i2c_encoder_get_client(encoder);
> > struct ch7006_priv *priv = to_ch7006_priv(encoder);
> > struct ch7006_state *state = &priv->state;
> >
> > @@ -71,7 +71,7 @@ static void ch7006_encoder_dpms(struct drm_encoder *encoder, int mode)
> >
> > static void ch7006_encoder_save(struct drm_encoder *encoder)
> > {
> > - struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
> > + struct i2c_client *client = nouveau_i2c_encoder_get_client(encoder);
> > struct ch7006_priv *priv = to_ch7006_priv(encoder);
> >
> > ch7006_dbg(client, "\n");
> > @@ -81,7 +81,7 @@ static void ch7006_encoder_save(struct drm_encoder *encoder)
> >
> > static void ch7006_encoder_restore(struct drm_encoder *encoder)
> > {
> > - struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
> > + struct i2c_client *client = nouveau_i2c_encoder_get_client(encoder);
> > struct ch7006_priv *priv = to_ch7006_priv(encoder);
> >
> > ch7006_dbg(client, "\n");
> > @@ -116,7 +116,7 @@ static void ch7006_encoder_mode_set(struct drm_encoder *encoder,
> > struct drm_display_mode *drm_mode,
> > struct drm_display_mode *adjusted_mode)
> > {
> > - struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
> > + struct i2c_client *client = nouveau_i2c_encoder_get_client(encoder);
> > struct ch7006_priv *priv = to_ch7006_priv(encoder);
> > struct ch7006_encoder_params *params = &priv->params;
> > struct ch7006_state *state = &priv->state;
> > @@ -179,7 +179,7 @@ static void ch7006_encoder_mode_set(struct drm_encoder *encoder,
> > static enum drm_connector_status ch7006_encoder_detect(struct drm_encoder *encoder,
> > struct drm_connector *connector)
> > {
> > - struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
> > + struct i2c_client *client = nouveau_i2c_encoder_get_client(encoder);
> > struct ch7006_priv *priv = to_ch7006_priv(encoder);
> > struct ch7006_state *state = &priv->state;
> > int det;
> > @@ -285,7 +285,7 @@ static int ch7006_encoder_set_property(struct drm_encoder *encoder,
> > struct drm_property *property,
> > uint64_t val)
> > {
> > - struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
> > + struct i2c_client *client = nouveau_i2c_encoder_get_client(encoder);
> > struct ch7006_priv *priv = to_ch7006_priv(encoder);
> > struct ch7006_state *state = &priv->state;
> > struct drm_mode_config *conf = &encoder->dev->mode_config;
> > @@ -370,7 +370,7 @@ static int ch7006_encoder_set_property(struct drm_encoder *encoder,
> > return 0;
> > }
> >
> > -static const struct drm_encoder_slave_funcs ch7006_encoder_funcs = {
> > +static const struct nouveau_i2c_encoder_funcs ch7006_encoder_funcs = {
> > .set_config = ch7006_encoder_set_config,
> > .destroy = ch7006_encoder_destroy,
> > .dpms = ch7006_encoder_dpms,
> > @@ -437,7 +437,7 @@ static int ch7006_resume(struct device *dev)
> >
> > static int ch7006_encoder_init(struct i2c_client *client,
> > struct drm_device *dev,
> > - struct drm_encoder_slave *encoder)
> > + struct nouveau_i2c_encoder *encoder)
> > {
> > struct ch7006_priv *priv;
> > int i;
> > @@ -448,8 +448,8 @@ static int ch7006_encoder_init(struct i2c_client *client,
> > if (!priv)
> > return -ENOMEM;
> >
> > - encoder->slave_priv = priv;
> > - encoder->slave_funcs = &ch7006_encoder_funcs;
> > + encoder->encoder_i2c_priv = priv;
> > + encoder->encoder_i2c_funcs = &ch7006_encoder_funcs;
> >
> > priv->norm = TV_NORM_PAL;
> > priv->select_subconnector = DRM_MODE_SUBCONNECTOR_Automatic;
> > @@ -495,7 +495,7 @@ static const struct dev_pm_ops ch7006_pm_ops = {
> > .resume = ch7006_resume,
> > };
> >
> > -static struct drm_i2c_encoder_driver ch7006_driver = {
> > +static struct nouveau_i2c_encoder_driver ch7006_driver = {
> > .i2c_driver = {
> > .probe = ch7006_probe,
> > .remove = ch7006_remove,
> > @@ -516,12 +516,12 @@ static struct drm_i2c_encoder_driver ch7006_driver = {
> >
> > static int __init ch7006_init(void)
> > {
> > - return drm_i2c_encoder_register(THIS_MODULE, &ch7006_driver);
> > + return i2c_add_driver(&ch7006_driver.i2c_driver);
> > }
> >
> > static void __exit ch7006_exit(void)
> > {
> > - drm_i2c_encoder_unregister(&ch7006_driver);
> > + i2c_del_driver(&ch7006_driver.i2c_driver);
> > }
> >
> > int ch7006_debug;
> > diff --git a/drivers/gpu/drm/nouveau/dispnv04/i2c/ch7006_mode.c b/drivers/gpu/drm/nouveau/dispnv04/i2c/ch7006_mode.c
> > index 6afe6d0ee6306db57c3e3bafe2bf1b0b1b49aea5..e58d94451959a2afc01f570ea620d8e6721cb7af 100644
> > --- a/drivers/gpu/drm/nouveau/dispnv04/i2c/ch7006_mode.c
> > +++ b/drivers/gpu/drm/nouveau/dispnv04/i2c/ch7006_mode.c
> > @@ -198,7 +198,7 @@ const struct ch7006_mode *ch7006_lookup_mode(struct drm_encoder *encoder,
> >
> > void ch7006_setup_levels(struct drm_encoder *encoder)
> > {
> > - struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
> > + struct i2c_client *client = nouveau_i2c_encoder_get_client(encoder);
> > struct ch7006_priv *priv = to_ch7006_priv(encoder);
> > uint8_t *regs = priv->state.regs;
> > const struct ch7006_tv_norm_info *norm = &ch7006_tv_norms[priv->norm];
> > @@ -229,7 +229,7 @@ void ch7006_setup_levels(struct drm_encoder *encoder)
> >
> > void ch7006_setup_subcarrier(struct drm_encoder *encoder)
> > {
> > - struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
> > + struct i2c_client *client = nouveau_i2c_encoder_get_client(encoder);
> > struct ch7006_priv *priv = to_ch7006_priv(encoder);
> > struct ch7006_state *state = &priv->state;
> > const struct ch7006_tv_norm_info *norm = &ch7006_tv_norms[priv->norm];
> > @@ -253,7 +253,7 @@ void ch7006_setup_subcarrier(struct drm_encoder *encoder)
> >
> > void ch7006_setup_pll(struct drm_encoder *encoder)
> > {
> > - struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
> > + struct i2c_client *client = nouveau_i2c_encoder_get_client(encoder);
> > struct ch7006_priv *priv = to_ch7006_priv(encoder);
> > uint8_t *regs = priv->state.regs;
> > const struct ch7006_mode *mode = priv->mode;
> > @@ -324,7 +324,7 @@ void ch7006_setup_power_state(struct drm_encoder *encoder)
> >
> > void ch7006_setup_properties(struct drm_encoder *encoder)
> > {
> > - struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
> > + struct i2c_client *client = nouveau_i2c_encoder_get_client(encoder);
> > struct ch7006_priv *priv = to_ch7006_priv(encoder);
> > struct ch7006_state *state = &priv->state;
> > const struct ch7006_tv_norm_info *norm = &ch7006_tv_norms[priv->norm];
> > diff --git a/drivers/gpu/drm/nouveau/dispnv04/i2c/ch7006_priv.h b/drivers/gpu/drm/nouveau/dispnv04/i2c/ch7006_priv.h
> > index c66ca7f525034bb9fd113c5edf10c371a01c3c79..a62387ae3af11163cbd64317686a8be5a4f4011c 100644
> > --- a/drivers/gpu/drm/nouveau/dispnv04/i2c/ch7006_priv.h
> > +++ b/drivers/gpu/drm/nouveau/dispnv04/i2c/ch7006_priv.h
> > @@ -27,9 +27,9 @@
> > #ifndef __DRM_I2C_CH7006_PRIV_H__
> > #define __DRM_I2C_CH7006_PRIV_H__
> >
> > -#include <drm/drm_encoder_slave.h>
> > #include <drm/drm_probe_helper.h>
> >
> > +#include <i2c/encoder_i2c.h>
> > #include <i2c/ch7006.h>
>
> I don't have a strong opinion on the nouveau driver internals, but I
> think
>
> #include <dispnv04/i2c/encoder_i2c.h>
> #include <dispnv04/i2c/ch7006.h>
>
> could be less ambiguous. Up to you and the nouveau maintainers.
Good question. I'll post v2, fixing the missing Kconfig in patch 1 and
keeping existing includes, but I'm open to the feedback from nouveau
maintainers.
--
With best wishes
Dmitry
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